/*
 * Copyright (c) 2004-2022, University of Oslo
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * Neither the name of the HISP project nor the names of its contributors may
 * be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.hisp.dhis.mock.batchhandler;

import java.util.ArrayList;
import java.util.List;
import java.util.function.UnaryOperator;

import org.hisp.quick.BatchHandler;
import org.hisp.quick.JdbcConfiguration;

/**
 * @author Lars Helge Overland
 */
public class MockBatchHandler<T>
    implements BatchHandler<T>
{
    private List<T> inserts = new ArrayList<>();

    private List<T> updates = new ArrayList<>();

    private List<T> deletes = new ArrayList<>();

    private UnaryOperator<T> findObject = obj -> null;

    private int addObjectCount = 0;

    public MockBatchHandler()
    {
    }

    public MockBatchHandler<T> withFindSelf( boolean findSelf )
    {
        return withFindObject( obj -> findSelf ? obj : null );
    }

    public MockBatchHandler<T> withFindObject( UnaryOperator<T> findObject )
    {
        this.findObject = findObject;
        return this;
    }

    @Override
    public BatchHandler<T> init()
    {
        this.addObjectCount = 0;
        return this;
    }

    @Override
    public JdbcConfiguration getConfiguration()
    {
        return null;
    }

    @Override
    public boolean addObject( T object )
    {
        addObjectCount++;
        return inserts.add( object );
    }

    @Override
    public boolean insertObject( T object )
    {
        return true;
    }

    @Override
    public T findObject( T arg )
    {
        return findObject.apply( arg );
    }

    @Override
    public void updateObject( T object )
    {
        updates.add( object );
    }

    @Override
    public void deleteObject( T object )
    {
        deletes.add( object );
    }

    @Override
    public boolean objectExists( T object )
    {
        return false;
    }

    public int getObjectIdentifier( Object object )
    {
        return 0;
    }

    @Override
    public void flush()
    {
        addObjectCount = 0;
    }

    public List<T> getInserts()
    {
        return inserts;
    }

    public List<T> getUpdates()
    {
        return updates;
    }

    public List<T> getDeletes()
    {
        return deletes;
    }

    @Override
    public int getAddObjectCount()
    {
        return addObjectCount;
    }
}
